https://www.theguardian.com/world/2018/apr/16/treasure-of-legendary-danish-king-bluetooth-unearthed-in-germany
Hmmm. So, if a hoard's latest coins belong to a certain monarch, we can say it was his personal possession? Oddly enough, that is not what the German archaeologists seem to be saying. They seem to see it more as linked to the historical events of HB fleeing to Pomerania, a more conventional archeological interpretation.
and I just love the connection to modern technology as when you ask this generation where the term 'bluetooth' came from they say mobile phones!